# Codebook — Neuroinflammation

| Variable | Type | Unit | Description |
|---|---|---|---|
| patient_id | string | — | Patient ID |
| diagnosis | string | — | Diagnosis (AD/PD/MS) |
| csf_abeta42 | float | pg/mL | CSF Aβ42 |
| csf_tau_total | float | pg/mL | CSF total tau |
| csf_ptau181 | float | pg/mL | CSF pTau181 |
| plasma_nfl | float | pg/mL | Plasma NfL |
| mmse_score | int | 0-30 | MMSE |
